Heat exchange device



H. FELDMx-:VIER ET AL 1,845,256

feb. 16., 1932. HEAT EXCHANGE DEVICE Fiied March 14. 1930 2 Sheets-Sheet l www,

Y QNQ ,Rw Q K. -In VNMHHH lllllVI'NnlFAul mi rfi/fram y ff lllnlll||l|| l xllnllclllatlllllk if .Vlllllllllllllllllll llal lllllllllllxlllxlllvll Feb. 1&3, 1932. FELDMEIER ET AL.

HEAT EXCHANGE DEVICE Filed March 14,` 1930 2 Sheets-Sheet 2 i Patented Febe'lvv, k19?2V Imietje;STNif-Sg 'ro CHERRY-.Buurtenooaromirioiv, lor` LITTLE rnLits NEw YORK Alipucgun ined Maman, i930. serial nogessvae Y' .This invention relates'to tubular 4heatexchange devices and more paiticulail-yxto iin provements in internal tube heat exchange dei vices for cooling or heating. liquids, such as '5 milk, in which theV tubesfthrough whichfthe liquid lowsiaref arranged -within rout-er tubes through which flows the 'medium for cooling or heating the milk or liquid. In these devices as f ordinarily constructedfthe outer` u tubes are connected at theiry oppositeends -to vheaders which form return' passa-ges that join the outer tubes to forma continuous passage torv the heating or cooling medium, V'and the ends of the inner tubes extendingjout through f the headers are connected end to end by return caps or connections toftorm acontinuous passage Jfor the milk or liquid tolbefcooled or heated. The return` connections .or lcaps are usually constructed so that they can be'removed or opened to permit the readyfcleaning of the return caps and of the innermilk tubes. It is desirable in heatexchange devicesof this nature to inclinethetubes downwardly alternately in opposite directionslso that the continuous passageormedby the -tubesfand their return connections shall Vhave a rcontinuous downward inclination `to facilitate thecoinplete and ready draining ofthe liquids from thedevices. f' Y u .v

'.a-:i One object ofthis.inventidnisito provide anecient and practicaltubiilar;heat eX# change device ofal desirable novel1construcsage andwhichfis made lip-oi separateunits o r sections stacked:- oney upon aifiother, but Lin whichV nevertheless the tubes are .uniformly spaced apart-,sandali of the return connec# Ations forthe tubes arealike; also toprovide a section al heat exchange device whichis coinposed of separate V`units stacked one upon another and in which both the tubes and re-v tubes incline in opposite directions;` also to provide aheat exchange unitV ot novel construction such that a complete rdevice can be turn connections areuniformlyl arrangedand` spaced, notwithstanding that the alternater composed of any desired number, one or more,

- of the units; also itoprovide. kbase l and; Atop pieces fer f the "units adaptedto igive a ysimilar inisheda'ppearance to Vthedevice, whether composed of one-.oi` alplurality of stackedy units'yalso tof'cons'truct the device so that the HARVEY FELDMEIERAND wIIILIAii/I srnn, ,on LITTLE rants, yiviniirYorin', hssieius f tubescan be enclosedand protected by closure elements connecting the# headers and topV nishingfpieces andalsor-to prloducefa heat a exchangedevice liavin'glthe advantages andy teaturesn of improvements hereinafter j describedy and' setforthinithe claims.

v ,Inl the` accompanying. drawings: s. 'f1 Figui `isa 'side elevation, .partly broken away, and in section, on a reduced scale,of an internal tube heat Vexchange device exemplify,-

f ing one emhodi'mentof the invention.

Fig. 2 isa Vfragmentary side elevatioii`,'part I lyin section, showingone unit or'section of the apparatus,ltlie returnconnections forthe innertubes beingromitted.`

` Fig, 3 is a verticahfcentral section of one of the headers detached. W f' FigsAend 5 areoutside end elevations, on

a larger used .at opposite ends of the unit.

Y'Fig.'6 is an-end elevation Vof tlieidevicep f Fig-7 is a verticalcross sectionthereofapproximatelyon'the line 7 7, Fig.l l, and

. Fig. Slisa fragmentary side elevation of I I i one endof the devices Y Y Y l kThe device illustrated in the'drawings, isv an tions :er unitsfstaclzed onev upon' the other;

desired Snumber of the units,.1depending upon', thedesired capacity."v

cale, lrespectively,V of the headers v A internalti'ibe ,milk cooler comprising tw'o "secaV i HEaCh'iunit, as'shown, comprises-iaplurality of outentubes- 10 connected at .their `opposite ends toi-.fi'ontfgandtrcar headers lor tube supports l2 and jl'l, andan corresponding number of internal'tubes 13 each extending through and spaced from v one of ithe outer tubes 10.

Theheaders'lland l2 are suitably construct# edy to` provide y.the usual passages 11a and 12a which join, thefouter tubesk end totend a continuous passage forV the flow of a-heating orsco'oling medium, and the ends ofthe inner tubes,;- which preferably extend; out; through the headers 1l and 12fareconnectedbyreturn caps or'connections 15 which Vjoin the inner tubes in .a continuous passage for the flow of the inilk or other liquid to be cooled or heated. VThe medium iowing through the outer tubes surrounds the inner' tubes so that .an exchange of heat takes place between this medium and the fluid flowing through thein` .ner tubes. rlhe tubes are preferably arranged in t'wo adjacent vertical rows or banks with the tubesl in each bankMpara-lled with each 'Y other and the tubes in one bank inclined op -f .TheA

positely to the tubes in theot-her return connections 15, each ot which joins one internal tube in one bank to the next internal tube inthe other bank,are also preferablyl inclined so that the tubes and the. return con- 1 nections forni acontinuou's passagerwhich has a downward inclination throughout its length.

The' topniost internal Vtube 13 in` one bank inclines downwardly 'from front to rear Vand litsfrear end is connected bya return connecandthe top faces of th'eheadersiof the lower tion -to the-rear end ot thejtopniost tube 13 in the other bank. The last mentioned tube inclines downwardly from its rear end, and its front end -is .connectedbya frontreturnconnection 15` tothe front endof the second tube in thejirst-bank,y which int-urnl is connected at its rear end by the second rearreturn connection 15 tothe rear end of of the second tube in thesecondbank, Vall of the internal tubes in theunit being thus connected-end to endin series. ByA reason vof this opposite inclination of thev tubes, the frontl end' of each tube inzthe second bank is *dis-v vposed at lower elevation than .thefront vend "of the corresponding tube'. in. the first bank,

and because of the inclination Vof the return connectionsthere'is also' a difference in elevation between the rear ends ofthe `tubes' joined byV each return'connection, the dinerenceV inelevation between the front ends oi .the corresponding tubes 1n the two banks b-e Y ing considerably greater than ybetween the rear ends ofsaid tubes..` Y'llfierefore if-Athe bottom' faces ofthe headers of the'top unit unit, Von whichthe top unit-rests, were horizontal crosswise of the tubes, the-spacing b.e'

. tween theadjacent tubesotthestacked unitsl wou-ldbe greaterzthan the spacing'-lbetwe-en the tubes in each unit., In'such'case, a special return connectionihaving a different length or`V arrangement from the other 'return vconnections 15 would Yhave vto =be `employed to connect thebottoin tube'ofrthe upper unit with the top tube of kthe lower inrit.

In order to obviatethis and keepthe spac-'v ing between adjacent tubesV in differentstacked units the same as between the tubes in eachV unit, `and tov enableflike return connections 15 tobe used throughout and to' be ksiniarly arranged and uniformly spaced,

the top and bottom faces. of the headers are not horizontal, but the tops 17 of the headers of each unit are higher in the vertical plane of the first bank of tubes than in the vertical plane of the otherrbank'and the bottoins 18 of the headers are correspondingly formed to it the top ends of the headers ot a lower unit.

n Preferably, as shown inthe drawings, the top and bottoni ends of the headers are of stepped formation crosswise. While this stepped formation locates the oppositeends of the joints between the headers of adjacent sections at diiierent elevations, nevertheless the headers v,have dat horizontal faces abuttingand resting.

one upon the other which insures a irni rigid -supporttor one section upon the other. The

sectionscan be fsecuredftogether in their stacked' relation by any suitable'nieans as for exainplef by bolts 19 secured in perforated lugs 1 or flanges 20 on 'the .abutting top and bottoni endsof theheaders-- f v Because ot this stepped form of. the headf ers, a supporting ibase is preferably 'provided having end-,standards or parts. 21 and 22, the upper endsof which are ofsiinilar stepped formation tofit' thebottoinsof lthe headers of the heat exchangel unit that rests thereon. The-unit may be secured on 'this basev in any suitable manner, asby neansvo bolts "23 securedfinregistering holes in the bottoni flanges of the'headers and in the tops of the standards. ALs shown, the base standards'21and 22iare. connected by a :tie and brace rod 24., TheA base, however, could be of any suitable construction providing seats conformingv tothe shape of the lower ends of the headers of the unit resting thereon.

' Preferably the top 'ends of the headers o'l' the uppermost unit are surniounted byV crown pieces 25 and 26. each of which has a stepped bottoni'whichv'confo'rrnsto thestep= ed upare'secured Von topof the uppermost u'nit.

flfherefore they device, whether composedv of one, orinore than one. unit, will be of similar shapeand appearance except as to height.

It will be understood that the outer tubes 10 are connected at their ends to the front and rear headers by suitable packing' glands 30 V(see Fig. 2) or otherwise' tolprovide liquid tight joints between the outer tubes of the inner vwalls of the front and rear headers; and that the'internal tubes 13, which extend through the headers`,have` liquid tight joints l with the outerwalls of the lrontand :rear

Yheaders `formed eby pa'cliii'ngl` jlandsA y31` L' or otherwise, so that the heating. or. coolingfme# dium cannot leak from 4headers throughj the joints 'betvve'en thetubes n and the headers. rlhese partsmay beeft the usualor-fany suit' able constructions.V l l Y Also thereturn connections fo'rfjoining the ends of the internal'tubes may Abezvof any e .usual'orsuitable construction andflconnec'ted tothe 'ends et the tubes in any usualfor suitV abletinanner.; Preferably,however', each ol"-v the return connections comprises .Ian linneif member which isj secured tothev adjacent ends` of two ofthe internal tubes bysuitab'le` packing giands'36',A and aimovable cap or cover STcarried by a yoke 3,8 which is hinged at one end to the basemember and is-adapted to be releasably' secured at the:other.Y end-to the base member bya hinged 'clamping screw and thumb nut 39 by means :of Whichthe movable capsy can be tightly. clamped against the base member to form the returnpassage between the tubes.l These caps can `be readilyopened or movedto afford access tofthe 5' internal tubes and tothe return connections y orcleaning the tubes and return J connections; f l The tubes of the device are preferably fenclosed bya top cover'40.y and sidecoverplates or Walls 4l. The top'cover extendsbetween and connects the front and rear crownpieces, to which thecover may be secured by screws or other suitable fasteningsflZ, andthe side Walls 4:1 extend` from the .ronthea'ders to rthe rear headers and may be secured-y at Vtheir Vends tothe front andrearheaders by yscrews g or other suitable fasteni-ngs 43'. .The side Walls may also be .secured alongwtheir, :top

edges to thesideedgesofthejcoverl() 'by screws or fastenings 44:, andati their bottom edges to a `bottorrrclosure plate 45""eXtendf ing beneaththe tubes; Preferably the head# ers areprovided at their opposite sides with e verticalshoulders 46 againstwhichthe ver? tica-lends ofthe side Wallslilllsabutwith the Aouterffaces oi' the'ends of the sidewalls flush with the' side faces. btthe. headers." :The cot`r er, side and bottom plates,:rin` .conjunction ivithV the front andrear vheaders :and `Crowny pieces thustcrm a tight Vcasing enclosing -vthe* tubes. `vThis casing hides theftubes'and. givesV aneat attractive appearance to the device and lower en dof its opposite sideWith athreaded hole 5l for the connection'ot1 the pipes. Q'Thek f3 inlet pipes may be .connected with Vthe-hele aty oneV side fof the headerand the, outlet .pipe

with thehole at the oppositeside of the head;- i`

er' dependingupon the desired fdirectiono *lfoWf` of .the heating or cooling .medium up-r wardlyordoWnwardly Ythrough the unit or as may be requireddepending-upon-the-arv rangement and `connection 'ofthe device with Y v the other. associated apparatus." Y. e Vxeclaimfas our invention :.4 f y 1 l; Y Ina heat exchange :devicey the combinat'he' tubes in` different banks op'positely,` in# ,clinedQ-said headers having passagesIor theV circulation` of a medium .through said tubes,

internal tubes arranged in saidfouter tubes, i

and. return` connections joining saidl internal tubes end ltoyend,l the return connections. be# tween the internal tubes of eac-hunitand be'v tween vthe vbottom ltube 'of one unitfand .the

ftop tubefof the adjacent unit being; ofk like dimensions and all beingv uniformly inclined;l f

QLAheateXchange device comprising aplurahty of units arranged oneiaboveanf other; each unit .comprising opposite. head ers, outer tubesconnecting said headers, in# vternal tubes larranged 1n said'louter tubes,

return .connections joining said internal tubes gend-to end,` the tubes of each unit beingarA 'ranged in di'erentbanks with theztubes; in

the-different banks. oppositely inclined,r thetubes of. eachunit and the adjacent tubes-of '-adjacent'units beingxuniformly spaced apart and thereturn connections betweenthe internal, tubes of each vunit and between .the-p bottom tube of one unit .andthe top tubey of V the adjacent unitbeingvoflvlike dimensions` *l *Y and all uniformly spaced apart and uniform.- ly-inclinedw- 'i Y' heat` exchangeV device; comprising. a pluralityzot units earch comprising opposite headers', outer tubes connecting. said head? ers fandf .arianged in diferentfbanks withthc tubes Vin .the Y adjacent banks voppositely.inv clined,- an internaltube arranged yin each .of

`saidouter tubes,.aiid return connections joiningsaid internal tubes end to end; said units being arranged one;Y above vanother {vith .the :headers `ofo'n'e: unit mounted'upon the headfV `ers of anothenunit,y the joints :between-the. lheaders .of-:adjacent units'being higher .at

one side oftheunits than at the other side of e fl y,

the units. Y

. 4. 'A heat exchangeunit comprising` -opV- positeheaders, outer tubes connecting said headers, said tubesbeing arranged in different banks Withthe tubes'in different banks oppositely inclined, an internal .tube arranged in each of saidlouter tubes,` andre turn `connections joining said internal tubes end to. endjthe' top 'and bottom ends `of saidv headers being Vhigher adjacent oneV bank vof tubes thanadja centrv another bank of tubes,' a

ist

5 tion lof. a y"plurality" ofiunitsk arranged one -7 Y above another',kv 'each vunit` comprising front and rear headers, 'outer' tubesv connecting .said l `headers'and arranged. in di'erent banks, with .80

supporting baseiorfY said unit having :top i -faces complementary to the bottom ends fof n,

said headers .and lon which said headersa're secured, .f and .crown pieces. mounted ion :the .upper lends of "saidv headers .and havingV bottoms complementary to and secured uponzthe .f upper ends of said headers, the upperfendsof the crown pieces lon the `opposite. headers being of simi-lar ormfandheight. 7-

5. A heat `.exchange unit comprising opposite headers, outer tubes .connectlngsald headers and/arranged in rdifferent vertical rows with thetubes inrdiierentgrovvs opposltely inclinechxan internalturbe arrangedin 'reach et said autel" tubes, and reinirn.V connectionsjoining said internal tubes 'end to end,

.the topl .and bottom v ends 'of said. headers being of stepped formation.; i

arranged in different banks With the ltubes indifferent banks 'oppositely inclined, return conne'ctio'iis` joining said tubes end' to end, and supports for the opposite ends of said tubes, the top and bottom ends 'of saidrsup supports for the j'tubes, rthe'tubesl being ary ports being of steppedformation. crossvvise v of .said tubes. v Y 7; Ina heatexchange'uevicdthe combination cfa unit.V comprising tubes arranged in different banks'vvith the--tubes-in different :banks oppositely inclined, return connections joining said ,tubes vendzto end and supports :for `ftheY opposite ends otsaid'tubes, thetop and bottom ends of said supports being of stepped formation crosswise of said tubes and a supporting basejforsaid .unit having stepped por-tions complementary 4to said bot- Vtoms of said end support andon end-supports are mounted.

8. A heatexchangef device comprising sep` Y arable units arranged one abone another,each

unit comprising a groupv of tubesfan'd end ranged in different banks with the tubes in different banksv oppositely inclined, 4and ireturn connections.y joining said tubes endtto end, the return connections .between th'e'tubes of each kunit kandA betvveenthe.-adjacentv tubes ofadjacent units being of like dimensions and unform'ly arranged; Y:

f Quikheat' exchange device Comprising sepf arable units arranged'- one "above: another, .each unit. compressing a greup =of tubes andendy supports for the tubes, the' tubesbeing arranged J in diierent. bankswith the .tubes in different banks oppositely inclined,- and return connections Vjoiuuing said tubes endto end, the tubes of eacn` unit andthe adjacent tubes ofr` adjacentjunits being uniformly spaced apart.r

l0. A .heat exchange device comprising separable units stacked one upon another each'unit comprising agroup of tubes anr i' .end supportsr for the tubes. the tubes being arranged in diderent banks Iwith the tubes in each bank parallel yand the tubes .indifferent 6. A heat exchange. .unit comprising tubes which said.

nsesgas banks oppositely inclined,` andreturn con-nections joining the. tubes end to end,the tubes `of each .unit and the adjacent tubes of adjacent units being uniformly spaced apart-.and the return .connections between-the tubes of each unit and between the tubes of adjacent units being of like dimensions and uniformly arranged.

l1. A heat exchangey v'device comprising separate units stacked-one upon another, each unit .-.comprising tubes arrangedin diderent banks with the tubes in each bank parallel andthe tubes in different banks oppositely inclined, end supports for the tubes, and return connections joining the tubes end to end, the

end supports of adjacent'units being mounted one upon the other and the j ointsbetween said endsupports of' the units .being ot stepped formation.

'13. A heat exchange device comprising separate unitsstacked one upon another, each .unit comprising'tubes arranged one above another, return connections joining said tubes fend to end, said tubes .and return' connections forminga continuously inclined passage, and end supportsfor said tubes, the end supports of adjacent units being-mountedone upon another,fa-nd the joints between the end supports of the vunits being of stepped formation. 14. A heat exchange device comprising separate units stacked one upon another,each

unit comprising tubesv arranged vin fdiderent bankfswiththe tubes 'in each blank parallel and the'. tubes indifferent banks oppositely inclined, end supports for the tubes, returnfconnections oining the'tubesV endtoend, the end supports. of adjacent .units being mounted oneupon the other, and the portions of the joints'between said lend supports of the units ybeing at different elevationsadjacent different'banls of tubes, and an enclosure forthe tubes of the device comprising a cover member above the tubes, and side Walls joining the Ysides of said end supports and the sides of said cover member.

l5. A heat exchange device Comprising separate umts stacked one upon another, each unit comprising tubes arranged in different banks Withithe y tubes in each bank parallel and the'tubes in dilerent banks oppositely in cli'ned, 'end supports for the tubes, return conlnectionsfj oining the tubes end to end, the end supports of .adjacent units being mounted joints betWeen said end supports of the units being at dili'erent elevations adjacent dierent banks of tubes, crown pieces surmounting the said end supports,and an enclosure for lthe e tubes of the device comprising a cover; member joining said crown pieces above the tubes, Y

and side Walls joining the sides of said. end supports and the sides of said cover memberV 16. In a heat exchange device, the com bination of a pluralitylof separable unitsarranged one above another, each' unit comprising a group of tubes, and front and rear headers supporting said tubes and joining I., the tubes end to end, the tubes of each group f y being arranged in different 'banks oppositely inclined, and the tubes of eacli'unit and the` adjacent tubes of adjacent units being uni ornily spaced apart.

e 17. In a heat exchange device,'rthe combination of a plurality of separablevunits arf ranged one above another, each unit comprisl` ing a group of tubes, and front and rear headers supporting said tubes and joining the tubes end to end, the tubes of each'group be- 4 ing arranged in different banks Witli the tubes i l of each bank parallel and the tubes `in different banks oppositely inclined, and the tubes of each unit and the adjacent tubes of adja. l cent units being uniformly spaced apart.

HARVEY FEIiDlMlEIER.` f

e WILLIAMASTLE. j 

